init.lua

#!/usr/bin/env tarantool

require('strict').on()

-- configure path so that you can run application
-- from outside the root directory
if package.setsearchroot ~= nil then
    package.setsearchroot()
else
    -- Workaround for rocks loading in tarantool 1.10
    -- It can be removed in tarantool > 2.2
    -- By default, when you do require('mymodule'), tarantool looks into
    -- the current working directory and whatever is specified in
    -- package.path and package.cpath. If you run your app while in the
    -- root directory of that app, everything goes fine, but if you try to
    -- start your app with "tarantool myapp/init.lua", it will fail to load
    -- its modules, and modules from myapp/.rocks.
    local fio = require('fio')
    local app_dir = fio.abspath(fio.dirname(arg[0]))
    package.path = app_dir .. '/?.lua;' .. package.path
    package.path = app_dir .. '/?/init.lua;' .. package.path
    package.path = app_dir .. '/.rocks/share/tarantool/?.lua;' .. package.path
    package.path = app_dir .. '/.rocks/share/tarantool/?/init.lua;' .. package.path
    package.cpath = app_dir .. '/?.so;' .. package.cpath
    package.cpath = app_dir .. '/?.dylib;' .. package.cpath
    package.cpath = app_dir .. '/.rocks/lib/tarantool/?.so;' .. package.cpath
    package.cpath = app_dir .. '/.rocks/lib/tarantool/?.dylib;' .. package.cpath
end

-- params from env

local memtx_memory = tonumber(os.getenv("TARANTOOL_MEMTX_MEMORY")) or (128 * 1024 * 1024)

-- configure cartridge

local cartridge = require('cartridge')

-- https://www.tarantool.io/en/doc/latest/book/cartridge/cartridge_api/modules/cartridge/#cartridge-cfg
local ok, err = cartridge.cfg({
    bucket_count = 30000,
    roles = {
        'cartridge.roles.vshard-storage',
        'cartridge.roles.vshard-router',
        'cartridge.roles.metrics',
        'app.roles.key-value',
        'app.roles.storage',
        'app.roles.expiry-entries',
    }
}, {
    memtx_memory = memtx_memory,
    replication_synchro_quorum = 2,
    memtx_use_mvcc_engine = true,
    election_mode = 'candidate'
})

assert(ok, tostring(err))

-- register admin function to use it with 'cartridge admin' command

local admin = require('app.admin')
admin.init()

local metrics = require('cartridge.roles.metrics')
metrics.set_export({
    {
        path = '/metrics',
        format = 'prometheus'
    },
    {
        path = '/health',
        format = 'health'
    }
})